JP3329688B2 - Range food - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood that is installed above a cooking stove that enables operation control of a blower without contacting a control switch or the like.

[0002]

2. Description of the Related Art In recent years, a range hood for discharging smoke generated at the time of cooking to the outdoors has become popular with an increase in opportunities for cooking at home, and a control switch has been used to further improve usability. There is an increasing demand for a range hood that can easily control the operation in a non-contact state.

Conventionally, as a ventilation fan for controlling operation without operating a push button switch, a motion sensor is provided on a wall where the ventilation fan is installed, and when a user's hand is detected by the motion sensor. In some cases, when the input signal from the human sensor is greater than the reference voltage, it is determined that the hand has moved, and the control device is operated to control the operation of the ventilation fan.

[0004]

In such a configuration of the conventional ventilation fan, since the detection is performed using one human sensor, even if a hand or a human body during cooking is detected, the hand is held to control the operation. There has been a problem that the user is judged to be a wrong hand, malfunctions occur, and the usability is poor.

[0005] The present invention solves the above-mentioned problems, and provides a range hood which can prevent erroneous detection by using two sensor units and can accurately control the operation without contacting the switch operation unit.

[0006]

In a range hood according to the present invention, a first sensor unit for detecting a user's hand held over a range hood main body, and the first sensor unit for detecting when a hand moves, are provided. A second sensor unit provided at a predetermined interval from the first sensor unit, and a control unit that controls the operation of the range hood by inputting two detection signals from the first sensor unit and the second sensor unit. It is provided.

According to the present invention, it is possible to provide a range hood in which erroneous detection can be prevented by using two sensor units and operation can be accurately controlled without contacting the switch operation unit.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has an opening at a lower surface and a front surface, a blower provided inside, a hood disposed above a cooking table, and a front opening of the hood. A first sensor unit for detecting a user's hand held below a range hood body formed by a front hood having an open lower surface, and the first sensor unit for detecting when the hand moves A second sensor unit provided at a predetermined interval, a control unit for controlling the operation of the blower by inputting a detection signal, and an air volume setting unit for the blower, wherein the first sensor unit and the second The control unit performs a control operation when two detection signals are input from the sensor unit of the range hood. The range hood is configured by using the first sensor unit and the second sensor unit. Detect And, the second from the first sensor unit 2
It is detected that the hand has moved toward the sensor part of, and it is confirmed that it is a hand movement held consciously to control driving, erroneous detection is prevented, and driving is accurately controlled It has the effect of being done.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. (Embodiment 1) As shown in FIGS. 1 to 5, a hood 2 having a lower surface and a front surface, a blower 1 provided therein, and a front hood 3 having a lower surface opened so as to cover the front surface of the hood 2 are provided. The range hood body 4 is formed, and a first sensor portion 6 for detecting a user's hand 5 held over the range hood body 4 for controlling driving and a predetermined range are detected when the hand 5 moves. Has a second sensor unit 7 provided at a predetermined interval from the first sensor unit 6.
A control unit 9 for controlling the operation of the blower 1 by making a determination by the input determining means 8 for determining that two detection signals have been input
And an air volume setting means 10 for setting the air volume of the blower 1 to high, medium, and low in advance, and a switch 1 of a lamp (not shown) for irradiating the cooking table 11 below the range hood body 4.
2 is provided on the front hood 3 and configured.

In the above configuration, when operating the range hood, the user places his or her hand 5 below the range hood body 4.
, The hand 5 is detected by the first sensor unit 6, and the second sensor unit 7 detects the moved hand by moving the hand, and the first sensor unit 6 detects the hand. After the input determination means 8 of the control unit 9 determines that two detection signals from the sensor unit 6 and the second sensor unit 7 have been input, the air volume setting unit 1
The control unit 9 operates so that the blower 1 is operated with the air volume set at 0, and the range hood is operated.

When the operation of the range hood is stopped, the hand 5 is again held under the range hood main body 4 and the hand 5 is moved, so that the first sensor unit 6 and the second sensor unit 7 After the two detection signals are input to the control unit 9 and the input determination unit 8 makes a determination, the operation of the control unit 9 switches from operation to stop, and the operation of the blower 1 is stopped.

As described above, according to the range hood according to the first embodiment of the present invention, when the object detected by the first sensor unit 6 is large, the object is simultaneously detected by the second sensor unit 7. , Because the detection time becomes longer,
Since the determination is not made by the input determination means 8 of the control unit 9 and the operation of the range hood is not controlled, the movement of the hand 5 held for control is accurately determined by the first sensor unit 6 and the second sensor unit 7. Detection can be performed, erroneous detection can be prevented, and the operation of the range hood can be accurately controlled.

In the first embodiment, the control can be performed by holding the hand 5 over the first sensor unit 6 and moving the hand to the second sensor unit 7 side. Needless to say, the control can be performed even if the hand 5 is held over the sensor unit 7 and the hand 5 is moved to the first sensor unit 6 side.

(Embodiment 2) As shown in FIGS. 6 and 7, the control section 9A is controlled by a detection signal t of the first sensor section 6.
₂ and the time difference t between the generation of the detection signal t ₃ of the second sensor unit 7
A time difference judging means 8A for judging ₁ is provided, and the control operation is performed by the judgment of the time difference judging means 8A.

In the above configuration, when the range hood is driven, the user holds the hand 5 and moves the hand 5 within a certain range, so that the hand 5 is detected by the first sensor unit 6 and held. By moving the hand 5, the second sensor unit 7 detects the moved hand 5.

Then, the time difference t ₁ between the generation of the detection signal of the first sensor unit 6 and the detection signal of the second sensor unit 7 is determined by the time difference determination means 8 A, and the control unit 9 A operates to drive the blower 1. Then, the range hood is driven.

When the operation of the range hood is stopped, the operation is performed in the same manner as in the operation by holding the hand 5 again, and the operation of the control unit 9A is switched from the operation to the stop, and the operation of the blower 1 is stopped. You.

As described above, according to the range hood of the second embodiment of the present invention, the time difference t ₁ between the generation of the detection signals of the first sensor unit 6 and the second sensor unit 7 is determined by the time difference determination means 8.
By making the determination in A, it is possible to distinguish the operation at the time of moving the pan, the operation at the time of the cooking operation, and the operation of holding the hand, and the control unit 9A can accurately control the operation of the range hood. .

[0019] (Embodiment 3) As shown in FIGS. 8 and 9, it is determined that the generation of the control section 9B signals t ₂ the first sensor unit 6 has detected has disappeared within the predetermined time P ₁ The extinction time determination means 8B is provided, and the control operation is performed by the determination of the extinction time determination means 8B.

In the above configuration, when the range hood is driven, the user holds the hand 5 and moves the hand 5 within a certain range, so that the signal t ₂ detected by the first sensor unit 6 as the hand 5 is held. Disappears by moving the hand 5 to the second sensor unit 7 side, the disappearance is determined by the disappearance time determination unit 8B, the control unit 9B operates to drive the blower 1, and the range hood Is driven.

When the operation of the range hood is stopped, the operation is performed in the same manner as in the operation by holding the hand 5 again and moving, and the operation of the control unit 9B is switched from the operation to the stop, and the drive of the blower 1 is stopped. The operation of the range hood is stopped.

According to the range hood according to the third embodiment of the present invention, the signal t detected by the first sensor
The movement of the hand 5 can be detected by the disappearance of the hand ₂ due to the movement of the hand 5, and the movement of the hand due to the cooking operation or the movement of the hand due to the hand holding motion from the part of the head or the human body can be accurately distinguished The operation of the range hood can be controlled.

As shown in FIG. 10 and FIG. 11 (Embodiment 4), the control unit 9C, the detection signal t ₃ of the detection signal t ₂ and the second sensor unit 7 of the first sensor unit 6 is generated A predetermined time determination means 8C for determining whether or not a predetermined time t _{0 is} longer than a predetermined time t1 before extinction is provided, and the control operation is performed by the determination of the predetermined time determination means 8C.

In the above configuration, the range hood is operated.
The user holds his hand and moves the hand 5 within a certain range.
By moving the first sensor unit 6
The detection signal t_TwoOccurs, the hand 5 moves, and the second
Detection signal t detected by the sensor unit 7_ThreeOccurs
Then, the detection signal t of the first sensor unit 6_TwoAnd the second
Detection signal t detected by the sensor unit 7_ThreeFor a predetermined time t₀When
Is t_Two> T₀, T _Three> T₀At a given time
And the predetermined time t₀If it is over
When the determination is made, the control unit 9C operates to drive the blower 1
The range hood is driven.

Further, when stop operation of the range hood, by moving your hand again, act in the same manner as in the operation, the operation is driven blower 1 is stopped switches to stop the operation of the control unit 9C The operation of the range hood is stopped.

As described above, according to the range hood of the fourth embodiment of the present invention, the duration of the detection signal detected by the first sensor unit 6 and the second sensor unit 7 is set to a predetermined time or more. In addition, it is possible to distinguish between a quick operation during cooking and a hand-holding operation. In addition, it is possible to distinguish between passing a small appliance used for cooking and a hand-holding operation, so that the operation of the range hood can be accurately controlled.

[0027]

As is clear from the above embodiment,
According to the present invention, a first sensor unit for detecting a user's hand held over the range hood main body and a first sensor unit for detecting when the hand moves are provided at a predetermined interval from the first sensor unit. The control unit that controls the operation of the range hood by inputting two detection signals from the second sensor unit prevents erroneous detection and accurately controls the operation without touching the switch operation unit. A range hood that can be provided can be provided.

Further, since the control section is configured to perform the control operation based on the time difference between the generation of the detection signal of the first sensor section and the generation of the detection signal of the second sensor section, the movement of the hand held for control is controlled. Accurate detection is possible, and the operation of the range hood is accurately controlled.

Further, the control section is configured to perform the control operation when the generation of the signal detected by the first sensor section disappears within a predetermined time, so that the operation when the pan is moved and the cooking operation are performed. The operation can be controlled accurately by distinguishing the operation from the operation of holding the hand.

Further, the control section is configured to operate when the time until the signal detected by the first sensor section and the second sensor section is generated and disappears is equal to or longer than a predetermined value, so that the control section can be used during cooking. The quick operation and the hand-hold operation can be distinguished, and the operation can be controlled accurately.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of control of a range hood according to a first embodiment of the present invention.

FIG. 2 is a side view showing a configuration for controlling the installation of the range hood.

FIG. 3 is a perspective view showing a configuration of a control panel of the range hood.

FIG. 4 is a sectional view showing a state where a control panel is installed on the range hood.

FIG. 5 is a front view showing a detection state of a sensor unit of the range hood.

FIG. 6 is a block diagram showing a configuration of control of a range hood according to a second embodiment of the present invention.

FIG. 7 is a time chart showing a time difference between generation of a detection signal of the same range hood.

FIG. 8 is a block diagram illustrating a configuration of control of a range hood according to a third embodiment of the present invention.

FIG. 9 is a time chart showing the time of generation and disappearance of the detection signal of the same range hood.

FIG. 10 is a block diagram showing a configuration of control of a range hood according to a fourth embodiment of the present invention.

FIG. 11 is a time chart showing a time until a detection signal of the range hood is generated and disappears and a predetermined time.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 blower 2 hood 3 front hood 4 range hood main body 5 hand 6 first sensor unit 7 second sensor unit 9 control unit 9A control unit 9B control unit 9C control unit 10 air volume setting means

Claims (4)

(57) [Claims] 1. A range formed by a hood having a lower surface and a front surface, a blower provided therein, a hood disposed above a cooking table, and a front hood having a lower surface opened so as to cover the front opening of the hood. A first sensor unit for detecting a user's hand held over the hood main body, and a second sensor unit provided at a predetermined interval from the first sensor unit so as to detect when the hand moves. A control unit for controlling the operation of the blower by inputting a detection signal, and an air volume setting unit for the blower, wherein two detection signals from the first sensor unit and the second sensor unit are input. A range hood, wherein the control unit performs a control operation. 2. The range hood according to claim 1, wherein the control unit is configured to perform a control operation based on a time difference between the generation of the detection signal of the first sensor unit and the generation of the detection signal of the second sensor unit. 3. The range hood according to claim 1, wherein the control unit performs a control operation when the generation of the signal detected by the first sensor unit disappears within a predetermined time. 4. A control unit comprising: a first sensor unit and a second sensor unit.
The range hood according to claim 1, wherein the control unit performs a control operation by determining that a time until a signal detected by the sensor unit is generated and disappears is a predetermined time or more.